PET-MRI

November 29, 2015 — At the 101st Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA), Siemens Healthcare introduced new applications designed to drastically reduce the time needed for...

A single scan could diagnose the cause of foot pain better and with less radiation exposure to the patient than other methods, according to a study in the March 2015 issue of The Journal of Nuclear Medicine. Imaging with 18F-fluoride positron emission tomography/magnetic resonance imaging (PET/...

When prostate cancer makes a comeback, it becomes increasingly important to have exceptional imaging available to find all possible regions where cancer has spread to other parts of the body, or metastasized, in order to plan the best possible treatment. A relatively new imaging system that...

For patients with advanced breast cancer, positron emission tomography (PET) and magnetic resonance (MR) imaging can improve quality of life and survival by providing physicians with information on the effectiveness of chemotherapy prior to surgery, say researchers presenting at the 2013 Annual...

Panel A shows a flank A549 lung tumor in a nude mouse with combined 18F-FDG PET uptake (signal intensity in color) and T2-weighted anatomical MRI (grayscale). Panel B shows a similar tumor image with a relative permeability map for the tumor (color code) overlaid on a corresponding anatomical MRI reference. Regions identified as necrotic were not included in the DCE MRI analysis. Image courtesy of the University of Arizona Department of Medical Imaging.

A PET-CT head and neck cancer scan showing various image reconstructions. The top left image is the separate CT scan showing the anatomy. The top right scan shows the fused PET and CT scans with false color added to help interpret the image. The bottom left scan is an initial FDG PET image showing tracer hot spots in the neck and a lymph node in the right jaw due to cancer. The right bottom image is a delayed enhancement scan showing tracer uptake over time, with normal hot spots in the bladder, kidneys, testicles and brain, which normally have higher metabolic activity. The low-grade gray shading of the anatomy is due to the normal cellular metabolism uptake of the FDG throughout the body.

A PET-CT head and neck cancer scan showing various image reconstructions. The top left image is the separate CT scan showing the anatomy. The top right scan shows the fused PET and CT scans with false color added to help interpret the image. The bottom left scan is an initial FDG PET image showing tracer hot spots in the neck and a lymph node in the right jaw due to cancer. The right bottom image is a delayed enhancement scan showing tracer uptake over time, with normal hot spots in the bladder, kidneys, testicles and brain, which normally have higher metabolic activity. The low-grade gray shading of the anatomy is due to the normal cellular metabolism uptake of the FDG throughout the body.

Early detection of cancer lesions with the latest generation of PET/CT scanners supports improved patient management. Yet much of PET’s potential, particularly for following patients and as a component in PET/MR, remains unrealized. (Image courtesy of Siemens Healthcare and the University of Tennessee, Knoxville)

Siemens’ 510(k) pending MRI application Simultaneous Multi-Slice (SMS)¹ is based on an acceleration technology that speeds up 2-D acquisition time by a factor of three, enabling advanced MRI applications such as DTI (diffusion tensor imaging) and BOLD (blood oxygen level dependent) in the clinical routine.